scholarly journals Guide to Maintain Historic Egyptian Mosques: Case Study of Abul-Hajjaj Mosque - Luxor

2017 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Hesham Osman Abd Elrahman
Keyword(s):  
Preventive Maintenance ◽  
Major Elements ◽  
Historic Buildings ◽  
Planning And Scheduling ◽  
Common Ownership ◽  
The Status ◽  
Maintenance Systems ◽  
Maintenance Plan ◽  
Tools And Methods

The mosque is considered one of the most important buildings of the Islamic city since the Prophet's Mosque (peace and blessings be upon him), and maintenance is considered an important element and a cornerstone of buildings in general. This is due to the deterioration of public buildings generally given the bad use and common ownership of the mosque and in turn, its facilities have deteriorated. Some mosques belong to historic buildings, so maintaining them is of extra importance.In light of the status of the construction and maintenance systems of historic mosques in Egypt and the limitations and problems faced, this paper presents a proposed guide for the preventive maintenance of historic mosques. It also provides clear evidence for workers in the field of maintenance of mosques including the key elements that need to be taken into consideration while preparing the preventive maintenance plan for mosques.The preventive maintenance of the mosque needs a range of tools and methods in order to succeed. Planning and scheduling for items are major elements among these tools. In order to achieve integration between the elements and the different phases mentioned above, we need to formulate them in a form of an integrated guide with completed elements and dimensions. To find a guide for the maintenance of the mosques we should clearly identify the principles and rules for that guide. This comes through clarity of the purpose, the elements required to be controlled, how to control them, the statement of the time and places and the economic aspects of the guide.This research aims to find a guide for the maintenance of historic mosques, by making a case study for the Mosque of Abul-Hajjaj in Luxor.

scholarly journals Manutenção corretiva e preventiva em edifícios históricos: estudo de caso no centro histórico de São Luís/MA / Corrective and preventive maintenance in historic buildings: a case study in the historic center of São Luís/MA

2021 ◽  
Vol 7 (4) ◽  
pp. 36951-36967
Author(s):  
Nayolle Coelho Silva ◽  
Albino Paiva Nepomuceno Júnior ◽  
Matheus Sousa Gerude ◽  
Daniel Rocha Pereira ◽  
Itapotiara do Carmo Corrêa Vilas Bôas ◽  
...  
Keyword(s):  
Preventive Maintenance ◽  
Historic Buildings ◽  
Historic Center

Improvement of Preventive Maintenance Plan for an Automatic Labeling System: A Case Study of a Carbonated Soft Drink Industry

2014 ◽  
Vol 875-877 ◽  
pp. 1312-1317
Author(s):  
Onuma Kosanan ◽  
Nisakorn Somsuk ◽  
Chitlada Maimun ◽  
Worlaluck Satianrangsarith
Keyword(s):  
Preventive Maintenance ◽  
Soft Drink ◽  
Problem Analysis ◽  
Problem Solving Skills ◽  
System A ◽  
Maintenance Program ◽  
Set Up ◽  
Labeling System ◽  
Maintenance Plan

The aims of this research are to improve the preventive maintenance plan and to prepare the autonomous maintenance plan of an automatic labeling system for a carbonated soft drink industry as a case study. The labeling system of the case study has experienced the wastes in maintenance. According to the maintenance problem analysis, the main causes are lack of or inadequate preventive maintenance program, inadequate work order monitoring system, and inadequate staff skills (problem-solving skills of maintenance) to perform work. Therefore, in order to reduce the number and length of machine breakdowns and the seriousness of breakdowns, the preventive maintenance program is used instead of breakdown and routine maintenance by which maintenance skills are required, and in order to improve how machines are operated and handled by improving the skills, and the autonomous maintenance manual is set up to prepare for autonomous maintenance. After the improved preventive maintenance plan has been developed and then implemented, it was found that machine downtime reduced by 1.35% and machine availability increased by 1.74%.

scholarly journals PLANNING AND SCHEDULE OF MAINTENANCE WORKS FOR INJECTION MACHINES

2021 ◽  
Vol 1 (2) ◽  
pp. 41-51
Author(s):  
Ramona-Iuliana Popa ◽  
◽  
Maria Catana ◽  
Gabriel Cimpoesu ◽  
Lucian Burlea ◽  
...  
Keyword(s):  
Injection Molding ◽  
Machine Tools ◽  
Manufacturing Systems ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
Planning And Scheduling ◽  
A Company ◽  
Maintenance Plan ◽  
Optimal Type

Keeping the equipment and machinery in working order is a very important activity in the field of industrial production, being specific to the maintenance department within an enterprise. Ensuring an optimal in operation of the manufacturing systems is closely related to the prevention of defects, an action that must be found in a planning and scheduling of preventive-planned maintenance works. In the paper, in addition to the introductory part on the main objectives and implementation of the maintenance system and maintenance-specific operations, a case study is conducted for the planning and organization of maintenance in a company equipped with plastic injection machines. The main stages developed consisted in elaborating the maintenance plan, establishing the optimal moment for replacing the machine tools, choosing the optimal type of machine tool and establishing the elements of random wear of the machine tools. It is concluded that the optimal type of injection molding machine that will be chosen to replace the T10 injection molding machine is T14, because it has a minimum average cost of acquisition, maintenance and repair, respectively 42.286 UV.

An Application of Reliability Centered Maintenance Technique for Preventive Maintenance in Refinery Plant

2016 ◽  
Vol 848 ◽  
pp. 244-250
Author(s):  
Itthipol Nakamanuruck ◽  
Sompoap Talabgaew ◽  
Vichai Rungreunganun
Keyword(s):  
Preventive Maintenance ◽  
Risk Level ◽  
Reliability Engineering ◽  
Machine Maintenance ◽  
Machine Failure ◽  
Reliability Centered Maintenance ◽  
Maintenance Program ◽  
Refinery Plant ◽  
Maintenance Plan

This research aims for guidance in improving the productivity of the machines in case study of refinery plant based on the principle of preventive maintenance of machinery applications. This is to increase the availability and improve the reliability and overall equipment effectiveness (OEE) of the machines. From the data collected showed that high cost of maintenance is quite high caused by non-standard maintenance and no prioritization of machine maintenance. Therefore, the researchers proposed a maintenance program developed based on reliability engineering with failure mode and effects analysis (FMEA). FMEA was the first brought to analyze the root causes of machine failure and to evaluate the risk priority number (RPN). The data was performed preventive maintenance plan standardized the maintenance system in order to optimize maintenance task and maximize the efficiency of machinery. After applying FMEA, the result showed that the chance of failure in equipment was very low (1 time in 12 years) after the scheduled maintenance plan and opportunities to detect damage in advance was moderate to high. Therefore, the equipment with a moderate to high risk is likely more damage than the first round of maintenance (5 years). Moreover, the average of the residual risk level analysis of the machine decreased by 59.165% and overall equipment effectiveness (OEE) increased from 92.66% to 98%

Varied Responses to Human-Induced Seismicity in the City of Azle, Texas

2019 ◽  
Vol 3 (1) ◽  
pp. 1-8
Author(s):  
Sarmistha R. Majumdar
Keyword(s):  
State Government ◽  
Induced Seismicity ◽  
Oil And Gas ◽  
The United States ◽  
The State ◽  
Prior History ◽  
Small Community ◽  
Regulatory Policies ◽  
The Status

Fracking has helped to usher in an era of energy abundance in the United States. This advanced drilling procedure has helped the nation to attain the status of the largest producer of crude oil and natural gas in the world, but some of its negative externalities, such as human-induced seismicity, can no longer be ignored. The occurrence of earthquakes in communities located at proximity to disposal wells with no prior history of seismicity has shocked residents and have caused damages to properties. It has evoked individuals’ resentment against the practice of injection of fracking’s wastewater under pressure into underground disposal wells. Though the oil and gas companies have denied the existence of a link between such a practice and earthquakes and the local and state governments have delayed their responses to the unforeseen seismic events, the issue has gained in prominence among researchers, affected community residents, and the media. This case study has offered a glimpse into the varied responses of stakeholders to human-induced seismicity in a small city in the state of Texas. It is evident from this case study that although individuals’ complaints and protests from a small community may not be successful in bringing about statewide changes in regulatory policies on disposal of fracking’s wastewater, they can add to the public pressure on the state government to do something to address the problem in a state that supports fracking.

Optimizing preventive maintenance over a finite planning horizon in a semi-Markov framework

2020 ◽  
Author(s):  
Antonio Sánchez Herguedas ◽  
Adolfo Crespo Márquez ◽  
Francisco Rodrigo Muñoz
Keyword(s):  
Preventive Maintenance ◽  
Recurrence Relations ◽  
Direct Calculation ◽  
Planning Horizon ◽  
Practical Implementation ◽  
Practical Application ◽  
Mathematical Solution ◽  
Accumulated Reward ◽  
Finite Planning Horizon

Abstract This paper describes the optimization of preventive maintenance (PM) over a finite planning horizon in a semi-Markov framework. In this framework, the asset may be operating, and providing income for the asset owner, or not operating and undergoing PM, or not operating and undergoing corrective maintenance following failure. PM is triggered when the asset has been operating for τ time units. A number m of transitions specifies the finite horizon. This system is described with a set of recurrence relations, and their z-transform is used to determine the value of τ that maximizes the average accumulated reward over the horizon. We study under what conditions a solution can be found, and for those specific cases the solution τ* is calculated. Despite the complexity of the mathematical solution, the result obtained allows the analyst to provide a quick and easy-to-use tool for practical application in many real-world cases. To demonstrate this, the method has been implemented for a case study, and its accuracy and practical implementation were tested using Monte Carlo simulation and direct calculation.

scholarly journals Discursive Strategies and Sequenced Institutional Change: The Case of Marriage Equality in the United States

2021 ◽  
pp. 003232172110205
Author(s):  
Giulia Mariani ◽  
Tània Verge
Keyword(s):  
United States ◽  
Institutional Change ◽  
The United States ◽  
Marriage Equality ◽  
Agent Based ◽  
Discursive Strategies ◽  
Policy Debates ◽  
The Status ◽  
Private Actors

Building on historical and discursive institutionalism, this article examines the agent-based dynamics of gradual institutional change. Specifically, using marriage equality in the United States as a case study, we examine how actors’ ideational work enabled them to make use of the political and discursive opportunities afforded by multiple venues to legitimize the process of institutional change to take off sequentially through layering, displacement, and conversion. We also pay special attention to how the discursive strategies deployed by LGBT advocates, religious-conservative organizations and other private actors created new opportunities to influence policy debates and tip the scales to their preferred policy outcome. The sequential perspective adopted in this study allows problematizing traditional conceptualizations of which actors support or contest the status quo, as enduring oppositional dynamics lead them to perform both roles in subsequent phases of the institutional change process.

scholarly journals Determinants of judges’ career choices and productivity: a Polish case study

2021 ◽  
Author(s):  
Przemysław Banasik ◽  
Katarzyna Metelska-Szaniawska ◽  
Małgorzata Godlewska ◽  
Sylwia Morawska
Keyword(s):  
Career Choices ◽  
Social Recognition ◽  
District Courts ◽  
Self Monitoring ◽  
Administrative Supervision ◽  
Judicial Efficiency ◽  
The Status ◽  
Service Mission ◽  
The Stability

AbstractThe goal of this paper is to identify factors which affect judges’ productivity and career choice motives with the view of increasing judicial efficiency. Specifically, the investigation focuses on such aspects as judges’ remuneration, promotion, threat of judgment revocation, service/mission, periodic assessment, the threat of a complaint about protracted proceedings or of disciplinary proceedings, the threat of destabilization of the employment relationship, status/prestige of the profession, power/authority, social recognition, leisure, as well as administrative supervision and self-monitoring. To this end, a survey was conducted among judges of three of the largest Polish regional courts and subordinate district courts. The descriptive and statistical analyses show that judges’ care for the number of cases resolved, proxying for their productivity, is significantly correlated with self-monitoring of their adjudication activity. The stability of employment, the status/prestige of the profession and a relatively high remuneration are the most important factors in terms of judges’ career choices. In their care for the number of cases resolved remuneration is, albeit, no longer a relevant factor. Judges monitor their productivity due to reasons other than remuneration, possibly the sense of service/mission and the threat of various adverse consequences, the evidence for which is, however, also rather weak.

scholarly journals Status epilepticus from GABABR antibody positive encephalitis due to de novo mixed small cell and adenocarcinoma of the prostate

2020 ◽  
Vol 13 (11) ◽  
pp. e238172 ◽  
Author(s):  
Christopher Kwan ◽  
Aaron Sia ◽  
Cullen O'Gorman
Keyword(s):  
Status Epilepticus ◽  
De Novo ◽  
Locally Advanced ◽  
Small Cell ◽  
Gamma Aminobutyric Acid ◽  
Transrectal Biopsy ◽  
The Status ◽  
Adenocarcinoma Of The Prostate ◽  
Receptor Antibodies

We present a case study of a 67-year-old man who presented with a new onset of recurrent tonic-clonic seizures. He had tested positive to gamma-aminobutyric acid B receptor antibodies in his blood and cerebrospinal fluid, and subsequent CT imaging and transrectal biopsy confirmed the presence of a locally advanced mixed small cell and Gleason 9 adenocarcinoma of the prostate. His seizures remained resistant to treatment with multiple antiepileptic drugs, including sodium valproate, clobazam, topiramate, carbamazepine, phenytoin and lacosamide. He progressed to status epilepticus, which required intravenous immunoglobulin and steroids, followed by plasma exchange 1 week later. The status epilepticus was refractory and required multiple admissions to the intensive care unit.

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